who had the students (choose)as head of their group

题目

who had the students (choose)as head of their group
who had the students (choose)as head of their group.

答案

chosen

此句的疑问代词Who 作choose 的宾语,口语中可以用主格Who 作宾语
choose sb as... 把（某人）选为.

翻译： 这些学生选谁为他们组的组长了?

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